feat: update documentation structure and remove 'full' property from MDX files

- Enhanced the DocsPage component by adding table of content and popover configurations.
- Removed the 'full' property from multiple MDX files to streamline documentation structure.
- Updated meta.json to reflect new documentation organization and added a 'connectors' page.

surfsense_web/content/docs/connectors/slack.mdx

@@ -0,0 +1,33 @@
+---
+title: Slack
+description: Connect your Slack workspace to SurfSense
+---
+
+# Slack Connector
+
+Index your Slack conversations and make them searchable.
+
+## Prerequisites
+
+- A Slack workspace
+- Admin permissions to install apps
+
+## Setup
+
+1. Navigate to your Search Space settings
+2. Click on **Add Connector**
+3. Select **Slack** from the list
+4. Authorize SurfSense to access your Slack workspace
+5. Select the channels you want to index
+
+## What Gets Indexed
+
+- Public channel messages
+- Private channels (if authorized)
+- Thread replies
+- Shared files and links
+
+## Sync Frequency
+
+The Slack connector supports scheduled syncing to keep your conversations indexed.
+